---
title: tx
framework: accelerate
role: symbol
role_heading: Instance Property
path: accelerate/vimage_affinetransform_double/tx
---

# tx

The entry at position [3,1] in the matrix.

## Declaration

```swift
var tx: Double
```

## See Also

### Affine Transform Matrix Elements

- [a](accelerate/vimage_affinetransform_double/a.md)
- [b](accelerate/vimage_affinetransform_double/b.md)
- [c](accelerate/vimage_affinetransform_double/c.md)
- [d](accelerate/vimage_affinetransform_double/d.md)
- [ty](accelerate/vimage_affinetransform_double/ty.md)